Open Access

De novo metastatic breast cancer: Subgroup analysis of molecular subtypes and prognosis

  • Authors:
    • Li Zhang
    • Zhijun Li
    • Jie Zhang
    • Yansheng Wu
    • Yuying Zhu
    • Zhongsheng Tong
  • View Affiliations

  • Published online on: January 30, 2020     https://doi.org/10.3892/ol.2020.11359
  • Pages: 2884-2894
  • Copyright: © Zhang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

The purpose of the present study was to analyze the clinical and pathological characteristics, treatment, and prognosis of de novo metastatic breast cancer (DnMBC). Information regarding 1,890 patients treated for advanced breast cancer at the Tianjin Medical University Cancer Hospital between January 2008 to December 2017 was collected. Clinicopathological characteristics, treatments and outcomes of these patients were compared using the chi‑square test, log‑rank test, and Cox regression analysis. A total of 171 patients were diagnosed with DnMBC. The median age at diagnosis was 53 years (range, 23‑77). The percentage of T4 staging was higher (37.4%), 69.6% of patients were estrogen receptor (ER) positive, 59.1% were progesterone receptor positive, 29.8% had positive human epidermal growth factor receptor 2 (HER2) status, 68.4% had Ki‑67 ≥20%, 55% had oligometastasis at the initial diagnosis, ~87.7% were treated with chemotherapy initially and 24% received palliative surgery for the primary tumor. After a median follow‑up time of 26 months, the median progression‑free survival (PFS) and overall survival (OS) among patients with DnMBC were 11 (8.7‑13.3) months and 34 (27.9‑40.1) months, respectively. In the multivariable model, ER status and sites of first metastasis (oligometastasis or polymetastasis) were identified to be independent predictors of PFS (P<0.05); ER status, primary tumor stage, and surgical treatment of primary tumors were identified to be independent predictors of OS (P<0.05). In conclusion, the clinicopathological characteristics of DnMBC are greater invasiveness and a higher risk of progression. Palliative surgical treatment may improve the prognosis of HR+/HER2‑patients with oligometastasis. Therefore, individualized treatment as required is particularly important.
View Figures
View References

Related Articles

Journal Cover

April-2020
Volume 19 Issue 4

Print ISSN: 1792-1074
Online ISSN:1792-1082

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Zhang L, Li Z, Zhang J, Wu Y, Zhu Y and Tong Z: De novo metastatic breast cancer: Subgroup analysis of molecular subtypes and prognosis. Oncol Lett 19: 2884-2894, 2020
APA
Zhang, L., Li, Z., Zhang, J., Wu, Y., Zhu, Y., & Tong, Z. (2020). De novo metastatic breast cancer: Subgroup analysis of molecular subtypes and prognosis. Oncology Letters, 19, 2884-2894. https://doi.org/10.3892/ol.2020.11359
MLA
Zhang, L., Li, Z., Zhang, J., Wu, Y., Zhu, Y., Tong, Z."De novo metastatic breast cancer: Subgroup analysis of molecular subtypes and prognosis". Oncology Letters 19.4 (2020): 2884-2894.
Chicago
Zhang, L., Li, Z., Zhang, J., Wu, Y., Zhu, Y., Tong, Z."De novo metastatic breast cancer: Subgroup analysis of molecular subtypes and prognosis". Oncology Letters 19, no. 4 (2020): 2884-2894. https://doi.org/10.3892/ol.2020.11359